6.5 Properties of Water

Why is water known at the "universal solvent"

• it dissolves all known substances

• it dissolves only solid substances

• it dissolves the greatest number of substances

• it dissolves substances faster than all other solvents

After fishing in the ocean, a student left his fishing gear in the sun to dry. Later, he noticed that small white crystals had formed on the rod, reel, and fishing line. Which of these is the best explanation of what occurred?

• The water evaporated from the fishing gear, and sand was attracted to it.

• The salt in the ocean water reacted with the fishing gear and caused it to rust.

• The fish that were caught left scales on the fishing gear.

• The water evaporated from the fishing gear, and salt from the ocean was left behind.

Physical and chemical weathering processes are responsible for breaking down rocks. Which of these is an example of chemical weathering by water?

• Mineral crystals form as water evaporates from rocks.

• Limestone reacts with acid rain and dissolves.

• Water freezes in rock cracks and causes the rock to split.

• Moss collects and grows on the surface of rocks.

Which of these is a result of burning fossil fuels?

• solar energy

• clean water

• hydroelectric energy

• acid rain

Look at the map. Which city in the United States is located near the warmest ocean temperatures?

• 1

• 2

• 3

• 4

A cattle farmer owns land that includes part of a river stream. To maintain the best water quality, how much access should the cows have in the river?

• The cows should be allowed in the river at any time during the day or night.

• The cows should only be allowed in the river during the daytime hours

• The cows should not be permitted in the river.

• The cows should only be allowed in the river for 2 hours a day.

To generate electricity, water can be converted into steam to turn turbines. How is water converted into steam to produce this electricity?

• water is chemically changed

• water is heated

• water is cooled

• water is frozen

which item is NOT used to collect water?

• sprinklers

• aqueducts

• cisterns

• wells

The owner of a lake marina is making several improvements. Which improvement will help water quality in the lake?

• Provide trashcans for people for use.

• Sell gas and oil to all boaters.

• Add a paved parking lot for visitors.

• Build a concrete ramp for boater.

Directions: Click on each answer you want to select. You must select all correct answers. Because water is so essential in all areas of life, it is important people work together to make sure water is —

• protected

• rationed

• managed

• recycled

• conserved